HST's are very simple and using this great tool makes them even easier. I like that when you are finished, your square is already squared up and ready to sew.
Step 1: Lay out two squares of fabric that are the same size but different colors. Add 1/2" seam allowance. So if you want your final square to measure 4 inches cut your fabric 4 1/2".
|Do you see how I cut from the corner of the seam down on a diagonal? This will get rid of the dog ears when you press it open.|